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| Content Provider | IET Digital Library |
|---|---|
| Author | Chen, Sixuan Zou, Weixia Zhou, Zheng Cui, Mingyang |
| Abstract | In recent years, considerable studies have been devoted to physical-layer network coding (PLNC) in a two-way relay channel (TWRC) network with the symmetric channel. However, it may not be appropriate for the asymmetric channel in which the source-to-relay channels are not equally strong and the two sources may utilise different modulation. In this study, the authors studied the heterogeneous PLNC design in the asymmetric TWRC network with high-order modulation and proposed a relay denoising mapping approach to reduce the decoding error probability. Firstly, they put forward a cluster maximisation algorithm to enlarge one cluster by sucking the neighbour points, which satisfy the exclusive law. Then, based on this algorithm, they designed the heuristic nearest-neighbour denoising mapping (HNDM) approach. The HNDM algorithm divides the nearest neighbour superimposed constellation points into the same cluster as far as possible. Points in the same cluster are coded into a new symbol by a specific mapping that achieves a many-to-one mapping. Performance results are provided in terms of symbol error rate. Under diversity channel conditions, the performances of 16-quadrature amplitude modulator (16-QAM)-8-phase-shift keying and 16-QAM-quadrature phase-shift keying are evaluated. |
| Starting Page | 1571 |
| Ending Page | 1580 |
| Page Count | 10 |
| ISSN | 17518628 |
| Volume Number | 14 |
| e-ISSN | 17518636 |
| Issue Number | Issue 10, Jun (2020) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-com/14/10 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-com.2019.0386 |
| Journal | IET Communications |
| Publisher Date | 2020-03-16 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | 16-quadrature Amplitude Modulator-8-phase-shift Keying Asymmetric Channel Asymmetric TWRC Network Cluster Maximisation Algorithm Code Considerable Studies Decoding Denoising Mapping Approach Design Different Modulation Diversity Channel Condition Error Statistics Heterogeneous PLNC Design High-order Modulation HNDM Algorithm Modulation And Coding Method Nearest Neighbour Nearest-neighbour Denoising Mapping Approach Neighbour Point Network Coding Performance Analysis Phase Shift Keying Physical-layer Network Coding Quadrature Amplitude Modulation Radio Link And Equipment Relay Denoising Mapping Approach Source-to-relay Channel Specific Mapping Statistics Symmetric Channel Two-way Relay Channel Network Wireless Channel |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering Computer Science Applications |
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